Abbreviation for suite in mailing address

The common abbreviation for "suite" in a mailing address is "Ste." or "St.". For example:

• 123 Main St, Ste 101
• 456 Elm St, St 200

Both "Ste" and "St" are widely accepted and used in the United States. However, it's worth noting that some countries or regions may use different abbreviations, such as "S" or "Suite".